let $ = require("jquery");
const { myname } = require('./b.js')
require('./b.js')
console.log(myname)

import a from './a.js'
console.log(a)

let flag = true;
$(".box").on("click", function () {
    console.log(111)
    if (flag) {
        $(".box").css("background", "red");
    } else {
        $(".box").css("background", "blue");
    }
    flag = !flag;
})